A. 
After completion of the rough grade and prior to the laying of the foundation course, the subgrade shall be shaped to line and grade and thoroughly compacted with an approved self-propelled roller weighing not less than 10 tons. All hollows and depressions which develop under rolling shall be filled with acceptable granular material and rolled. This process should be continued until no depressions develop. The subgrade shall not be muddy or otherwise unsatisfactory when the foundation course is laid upon it.
B. 
Any soft or unstable portions of the subgrade which develop under the roller shall be completely excavated and removed from the right-of-way and shall be replaced with acceptable granular material and the area regraded and compacted as above.
C. 
Where a wet or swampy condition exists, more than one foot of subbase may be required, at the discretion of the Highway Superintendent.
A. 
Before fine grading or construction of curbs and sidewalks is started, all storm and sanitary sewers and all utilities, including house connections and hydrants, shall have been installed and all fill and backfill shall have been thoroughly compacted to the satisfaction of the Town Superintendent of Highways.
B. 
Fine grade shall conform to the prescribed width of pavement and shall extend equidistant from the center line of the road right-of-way and shall conform to the typical cross sections of the road pavement and to the approved line and grade.
A. 
After the fine grade and all curbs have been constructed to the satisfaction of the Town Superintendent of Highways, the developer shall furnish and place a foundation course of approved run-of-bank gravel, crusher-run stone or crusher-run gravel to the depths as called for in these specifications. All materials acceptable for these courses shall be hard, durable and sound and shall be well-graded from coarse to fine. One hundred percent by weight of the particles shall be of such size as will pass through a four-inch-square hole, not less than 30% shall pass the one-fourth-inch sieve, not more than 70% by weight pass the No. 40-mesh sieve and not more than 10% by weight pass the No. 200-mesh sieve.
B. 
The materials shall be placed on the finished subgrade by means of mechanical spreaders in three-inch layers and shall be thoroughly compacted by rolling with a self-propelled tenton roller. Water shall be added to the materials in such amounts as the Superintendent may consider necessary for proper compaction. After compaction, the course shall be true to grade and cross section, and any depressions shall be eliminated by the use of additional granular materials, thoroughly rolled in place. In all cases, the foundation course must be so thoroughly compacted that it will not weave under the roller, and the total depth after compaction shall not be less than 12 inches. The maximum particle size permitted in the three-inch graded gravel shall not exceed such size as will pass through a two-inch-square hole; 30% to 65% by weight shall pass the one-fourth-inch square sieve and not more than 10% by weight shall pass the No. 200-mesh sieve.